You can install new version from Eclipse update site at http://m2eclipse.sonatype.org/update-dev/
Note that you need to use "Install" action in the Eclipse Update
Manager, even if you already have m2eclipse installed. This way you will
pickup newly added plugins and features.
There is a known issue that after restarting Eclipse from Update
Manager it may fail to initialize JDT plugins and you have to restart
Eclipse one more time to clean that up.
If you are using Eclipse Ganymede release and WTP 3.0 (including one
from Eclipse for Java EE developers bundle) we also recommend to update
to WTP 3.0.1 from the update site at http://download.eclipse.org/webtools/updates

The 0.9.6 release is primarily focused on bug fixes and improving
stability and performance. You can see full list of issues resolved in
this release in project bug tracker at http://tinyurl.com/6cqkt4

We would like to thank everyone who helped us with this release,
including early feedback, bug reports, test projects, discussions in the
mailing list and the news group. We appreciate all of it, but especially
the time it takes to create test projects, etc. that allow us to
reproduce a bug. As always, bug reports and feature requests are welcome
in the project issue tracker http://jira.codehaus.org/browse/MNGECLIPSE